CN103044169B - Controlled release fertilizer using unsaturated polyester resin to cover film and production method thereof - Google Patents
Controlled release fertilizer using unsaturated polyester resin to cover film and production method thereof Download PDFInfo
- Publication number
- CN103044169B CN103044169B CN201210150063.6A CN201210150063A CN103044169B CN 103044169 B CN103044169 B CN 103044169B CN 201210150063 A CN201210150063 A CN 201210150063A CN 103044169 B CN103044169 B CN 103044169B
- Authority
- CN
- China
- Prior art keywords
- unsaturated polyester
- fertilizer
- release
- polyester resin
- coating liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000003337 fertilizer Substances 0.000 title claims abstract description 99
- 229920006337 unsaturated polyester resin Polymers 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000013270 controlled release Methods 0.000 title abstract description 44
- 239000013039 cover film Substances 0.000 title 1
- 238000000576 coating method Methods 0.000 claims abstract description 44
- 239000011248 coating agent Substances 0.000 claims abstract description 40
- 239000003822 epoxy resin Substances 0.000 claims abstract description 33
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 33
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000004202 carbamide Substances 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 229920006305 unsaturated polyester Polymers 0.000 claims description 32
- 239000003999 initiator Substances 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 10
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims description 7
- UICXTANXZJJIBC-UHFFFAOYSA-N 1-(1-hydroperoxycyclohexyl)peroxycyclohexan-1-ol Chemical group C1CCCCC1(O)OOC1(OO)CCCCC1 UICXTANXZJJIBC-UHFFFAOYSA-N 0.000 claims description 4
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical group NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 4
- GEMHFKXPOCTAIP-UHFFFAOYSA-N n,n-dimethyl-n'-phenylcarbamimidoyl chloride Chemical group CN(C)C(Cl)=NC1=CC=CC=C1 GEMHFKXPOCTAIP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 2
- 229960001124 trientine Drugs 0.000 claims 2
- -1 promotor Substances 0.000 claims 1
- 239000008187 granular material Substances 0.000 abstract description 16
- 235000015097 nutrients Nutrition 0.000 abstract description 15
- 239000002245 particle Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 12
- 239000002987 primer (paints) Substances 0.000 description 9
- 150000001875 compounds Chemical class 0.000 description 8
- 239000007921 spray Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920001187 thermosetting polymer Polymers 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 229920000620 organic polymer Polymers 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000618 nitrogen fertilizer Substances 0.000 description 1
- 235000015816 nutrient absorption Nutrition 0.000 description 1
- 235000021048 nutrient requirements Nutrition 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Landscapes
- Fertilizers (AREA)
Abstract
本发明涉及一种以不饱和聚酯树脂包膜的控释肥料及其生产方法，是先将转鼓中的尿素颗粒预热到一定温度后，然后将环氧树脂包膜液加入或喷涂到尿素颗粒表面上，固化成膜后形成底涂层。再将不饱和聚酯树脂包膜液逐渐分次加入或涂布于颗粒肥料的底涂层上，固化成膜后即可得不饱和聚酯树脂包膜控释肥料。通过底涂层的加入，改善了不饱和聚酯树脂包膜液与尿素之间的润湿性，增加了不饱和聚酯树脂对尿素颗粒的包涂效果，延长了包膜肥料的养分释放期。该产品不仅具有较好的抗冲击、耐磨等性能，而且还具有使膜内养分按照设定模式可控制释放的性能。养分控制释放期可以在1个月到6个月不等。
The invention relates to a controlled-release fertilizer coated with unsaturated polyester resin and a production method thereof. The urea granules in the drum are preheated to a certain temperature, and then the epoxy resin coating liquid is added or sprayed on the On the surface of urea particles, a primer layer is formed after curing to form a film. Then the unsaturated polyester resin coating solution is gradually added or coated on the undercoat layer of the granular fertilizer, and the unsaturated polyester resin coated controlled-release fertilizer can be obtained after curing to form a film. Through the addition of the primer layer, the wettability between the unsaturated polyester resin coating solution and urea is improved, the coating effect of the unsaturated polyester resin on the urea particles is increased, and the nutrient release period of the coated fertilizer is prolonged. . This product not only has good impact resistance and wear resistance, but also has the ability to control the release of nutrients in the film according to the set mode. Nutrient controlled release periods can vary from 1 month to 6 months.
Description
（一）技术领域(1) Technical field
本发明涉及一种以不饱和聚酯树脂包膜的控释肥料及其生产方法，属于控释肥料生产领域。 The invention relates to a controlled-release fertilizer coated with unsaturated polyester resin and a production method thereof, belonging to the field of controlled-release fertilizer production.
（二）背景技术(2) Background technology
化肥是农业的主要生产资料之一。我国化肥消耗量约占世界化肥消耗总量的20-30%，居世界第一位，但是我国氮肥当季利用率平均仅为30-35%。肥料利用率低不仅造成资源的巨大浪费，还给人类赖以生存的环境造成严重污染。包膜控释肥料是一种集配方施肥、控释技术为一体的物化高科技产品，不仅能提高肥料利用率，减少环境污染，也满足了农民的实际需求。 Fertilizer is one of the main means of production in agriculture. my country's chemical fertilizer consumption accounts for about 20-30% of the world's total chemical fertilizer consumption, ranking first in the world, but the average seasonal utilization rate of nitrogen fertilizer in my country is only 30-35%. The low utilization rate of fertilizers not only causes a huge waste of resources, but also causes serious pollution to the environment on which human beings depend. Coated controlled-release fertilizer is a physical and chemical high-tech product integrating formula fertilization and controlled-release technology. It can not only improve fertilizer utilization rate, reduce environmental pollution, but also meet the actual needs of farmers.
包膜控释肥料是以颗粒肥料为核心，表面涂覆一层低水溶性或微溶性的无机物质或有机聚合物，改变肥料养分的溶出性，延长或控制肥料养分释放，使土壤养分的供应与作物需肥要求协调的新型肥料。 The coated controlled-release fertilizer is based on granular fertilizer, and the surface is coated with a layer of low water-soluble or slightly soluble inorganic substances or organic polymers to change the dissolution of fertilizer nutrients, prolong or control the release of fertilizer nutrients, and make the supply of soil nutrients A new type of fertilizer that is coordinated with crop fertilizer requirements.
目前国内外包膜控释肥料的类型主要有：无机物包膜肥料和有机物包膜肥料两大类。无机物包膜肥料以美国TVA公司开发的硫包衣尿素（SCU）（US3295950）为主，但由于硫磺的缓释效果不是十分理想，后来在原包膜尿素外再包一层有机聚合物层，成为有机聚合物包膜的硫包衣尿素。硫包衣尿素的改性增强了膜的抗水性和机械性能，提高了包膜材料的控释能力。在聚合物包膜的控释肥中，又有热塑性和热固性树脂两种类型的包膜控释肥料。例如：以热塑性树脂包膜的控释肥料以日本的“Meister”为代表，以热固性树脂包膜的控释肥料主要以美国的“Osmocote”为代表。中国专利“以喷涂尿素为底涂层的改性环氧树脂包膜控释肥料的制备方法”（CN1246264C）公开了一种将改性环氧树脂均匀涂布到复合肥上的方法。此方法无溶剂、制备简单、养分释放性能很好，但是昂贵的环氧树脂使其广泛应用受到一定限制，但关于价格较低的不饱和聚酯树脂包膜控释肥料的研究在国内外却鲜有报道。 At present, the types of film-coated controlled-release fertilizers at home and abroad mainly include: inorganic matter-coated fertilizers and organic matter-coated fertilizers. Inorganic coated fertilizers are mainly sulfur-coated urea (SCU) (US3295950) developed by the TVA company of the United States. However, due to the unsatisfactory slow-release effect of sulfur, an organic polymer layer was added to the original coated urea. Sulfur-coated urea that becomes an organic polymer coating. The modification of sulfur-coated urea enhanced the water resistance and mechanical properties of the membrane, and improved the controlled release ability of the coating material. Among polymer-coated controlled-release fertilizers, there are two types of coated controlled-release fertilizers, thermoplastic and thermosetting resins. For example, the controlled-release fertilizer coated with thermoplastic resin is represented by Japan's "Meister", and the controlled-release fertilizer coated with thermosetting resin is mainly represented by "Osmocote" in the United States. The Chinese patent "Preparation Method of Modified Epoxy Resin-coated Controlled Release Fertilizer Using Spraying Urea as Undercoating" (CN1246264C) discloses a method for uniformly coating modified epoxy resin on compound fertilizer. This method is solvent-free, easy to prepare, and has good nutrient release performance, but the expensive epoxy resin limits its wide application, but the research on the lower-priced unsaturated polyester resin-coated controlled-release fertilizers has little research at home and abroad. Rarely reported.
（三）发明内容(3) Contents of the invention
为了开发出低成本、无溶剂、工艺简单，适合于快速大批量生产的控释包膜新工艺、新配方，本发明提供了一种以不饱和聚酯树脂包膜的控释肥料及其生产方法，是采用价格较低、无溶剂、制备工艺简单的不饱和聚酯树脂作为包膜材料，制备控释效果较好的不饱和聚酯树脂包膜控释肥料。 In order to develop a low-cost, solvent-free, simple process, and a new process and new formula for controlled-release coating suitable for rapid mass production, the invention provides a controlled-release fertilizer coated with unsaturated polyester resin and its production. The method adopts the unsaturated polyester resin with low price, no solvent and simple preparation process as the coating material to prepare the unsaturated polyester resin coated controlled release fertilizer with better controlled release effect.
本发明的目的是提供一种无溶剂、成本低、工艺简单、适合于快速大批量生产的不饱和聚酯树脂包膜控释肥料及其生产工艺。 The object of the present invention is to provide a solvent-free, low-cost, simple-process, unsaturated polyester resin-coated controlled-release fertilizer suitable for rapid mass production and its production process.
一种以不饱和聚酯树脂包膜的控释肥料，包括尿素颗粒肥料和喷涂在尿素颗粒肥料表面的环氧树脂底涂层及喷涂在底涂层外的不饱和聚酯树脂包膜液；所述的环氧树脂底涂层包括环氧树脂和固化剂；所述的固化剂为二乙烯三胺、三乙烯四胺或它们的混合物；所述的不饱和聚酯包膜液中不饱和聚酯、促进剂、引发剂分别占不饱和聚酯包膜液的重量的90-95%、1-4%、1-4%；所述的促进剂为环烷酸钴；所述的引发剂为过氧化环己酮；所述的环氧树脂底涂层的使用量占肥料总重量的1-6%；所述的喷涂于颗粒肥料表面的不饱和聚酯包膜液的重量占颗粒肥料总重量的4-10%。 A controlled-release fertilizer coated with an unsaturated polyester resin, comprising urea granular fertilizer, an epoxy resin primer sprayed on the surface of the urea granular fertilizer, and an unsaturated polyester resin coating liquid sprayed outside the primer coat; Described epoxy resin undercoating comprises epoxy resin and curing agent; Described curing agent is diethylenetriamine, triethylenetetramine or their mixture; Unsaturated in described unsaturated polyester coating solution Polyester, accelerator, initiator account for 90-95%, 1-4%, 1-4% of the weight of unsaturated polyester coating solution respectively; Described accelerator is cobalt naphthenate; Described initiation The agent is cyclohexanone peroxide; the use amount of the epoxy resin primer accounts for 1-6% of the total weight of the fertilizer; the weight of the unsaturated polyester coating solution sprayed on the surface of the granular fertilizer accounts for 1% of the granular fertilizer 4-10% of the total weight of fertilizer.
一种以不饱和聚酯树脂包膜的控释肥料的生产方法，首先将尿素颗粒肥料加入转鼓流化床中预热，环氧树脂和固化剂混合均匀成环氧树脂包膜液，待转鼓温度预热到 50-90℃时，在肥料表面喷涂环氧树脂包膜液作为底涂层；所述的固化剂为二乙烯三胺、三乙烯四胺或它们的混合物；然后将不饱和聚酯、促进剂和引发剂混合均匀成不饱和聚酯包膜液，再将不饱和聚酯树脂包膜液喷涂在底涂层外；所述的不饱和聚酯包膜液中不饱和聚酯、促进剂和引发剂分别占不饱和聚酯包膜液重量的90-95%、1-4%、1-4%；所述的促进剂为环烷酸钴；所述的引发剂为过氧化环己酮；底涂层和不饱和聚酯树脂包膜过程各重复2-3次，所述的环氧树脂底涂层加入总重量占尿素颗粒肥料总重量的1-6%；不饱和聚酯包膜液加入总重量占颗粒肥料总重量的4-10%。 A production method of controlled-release fertilizer coated with unsaturated polyester resin, first adding urea granular fertilizer to preheating in a drum fluidized bed, mixing epoxy resin and curing agent uniformly to form epoxy resin coating liquid, and waiting When the temperature of the drum is preheated to 50-90°C, spray epoxy resin coating liquid on the surface of the fertilizer as a primer; the curing agent is diethylenetriamine, triethylenetetramine or their mixture; Saturated polyester, accelerator and initiator are mixed evenly to form an unsaturated polyester coating solution, and then the unsaturated polyester resin coating solution is sprayed on the outside of the primer layer; the unsaturated polyester coating solution is unsaturated The polyester, accelerator and initiator account for 90-95%, 1-4%, and 1-4% of the weight of the unsaturated polyester coating solution respectively; the accelerator is cobalt naphthenate; the initiator It is cyclohexanone peroxide; the primer coating and the unsaturated polyester resin coating process are repeated 2-3 times, and the total weight of the epoxy resin primer accounts for 1-6% of the total weight of the urea granular fertilizer; The total weight of the unsaturated polyester coating solution accounts for 4-10% of the total weight of the granular fertilizer.
本发明也可使用复合肥颗粒制备，在使用复合肥制备时，先在复合肥颗粒表面直接喷涂所述的不饱和聚酯树脂包膜液，然后喷涂所述的环氧树脂包膜液形成多种热固性树脂包膜的控释复合肥料。 The present invention can also be prepared using compound fertilizer granules. When using compound fertilizers to prepare, first directly spray the described unsaturated polyester resin coating solution on the surface of the compound fertilizer granules, and then spray the described epoxy resin coating solution to form multiple A controlled-release compound fertilizer coated with a thermosetting resin.
本发明的要点其一是先将转鼓中尿素颗粒肥料预热到一定温度后，喷涂环氧树脂包膜液，固化成膜后作为底涂层，以改善不饱和聚酯树脂与尿素颗粒之间的润湿性，可以通过调节环氧树脂包膜液中环氧树脂的含量来改变包膜控释肥产品的养分释放速率。其二是将不饱和聚酯、促进剂、引发剂按一定比例混合得到不饱和聚酯包膜液。其三是将不饱和聚酯包膜液分多次逐渐加入或喷涂到尿素颗粒的底涂层上，制得光滑致密的、具有不同养分释放性能的热固性树脂包膜控释尿素。 One of the main points of the present invention is to preheat the urea granule fertilizer in the drum to a certain temperature, then spray the epoxy resin coating liquid, and use it as a primer after curing to form a film, so as to improve the contact between the unsaturated polyester resin and the urea granule. The wettability between them can be changed by adjusting the content of epoxy resin in the epoxy resin coating solution to change the nutrient release rate of the coated controlled-release fertilizer product. The second is to mix unsaturated polyester, accelerator and initiator in a certain proportion to obtain unsaturated polyester coating liquid. The third is to gradually add or spray the unsaturated polyester coating solution to the undercoat layer of urea granules several times to prepare smooth and dense thermosetting resin coated controlled-release urea with different nutrient release properties.
本发明的显著效果是先在尿素颗粒表面喷涂一层环氧树脂作为底涂层，减少了不饱和聚酯树脂与尿素颗粒之间表面张力的差异性，有利于不饱和聚酯树脂的包膜均匀，而且设备要求简单，操作方便。产品的养分控制释放时期可以根据包膜材料的厚度来调节，能够控制在1个月到6个月不等，另外还可将具有不同释放时期、不同释放特性的包膜控释肥产品按一定的比例混合起来，模拟各种作物对养分的需求，做成各种专用包膜控释肥，使控释肥的养分释放曲线与作物对养分的吸收曲线相一致，达到养分精确控释的目的。 The remarkable effect of the present invention is that a layer of epoxy resin is firstly sprayed on the surface of urea granules as an undercoat layer, which reduces the difference in surface tension between unsaturated polyester resin and urea granules, and is beneficial to the coating of unsaturated polyester resin Even, and the equipment requirements are simple and easy to operate. The nutrient controlled release period of the product can be adjusted according to the thickness of the coating material, which can be controlled from 1 month to 6 months. In addition, the coated controlled release fertilizer products with different release periods and different release characteristics can be adjusted according to a certain period of time. Mix the ratio of different crops to simulate the nutrient requirements of various crops, and make a variety of special coated controlled-release fertilizers, so that the nutrient release curve of the controlled-release fertilizer is consistent with the nutrient absorption curve of the crops, so as to achieve the purpose of precise and controlled release of nutrients .
用此工艺生产的不饱和聚酯树脂包膜控释肥产品，已在国内多种作物上进行了大量的试验，结果表明，此产品具有显著的增产和增效作用，从性能和价格的角度来考虑，性价比要明显高于其他热固性树脂包膜控释肥料，具有极为广泛的推广应用前景。 The unsaturated polyester resin-coated controlled-release fertilizer produced by this process has been tested on a variety of domestic crops. The results show that this product has a significant increase in production and efficiency. From the perspective of performance and price Considering it, the cost performance is significantly higher than other thermosetting resin-coated controlled-release fertilizers, and it has a very wide application prospect.
（四）附图说明(4) Description of drawings
图1：本发明的包膜控释肥料制作工艺流程图。 Fig. 1: Flow chart of the production process of the coated controlled-release fertilizer of the present invention.
图中1首先将尿素加入转鼓中，2是在加热转鼓中使肥料预热到40-50℃,3是将环氧树脂体系各组分按比例计量放入容器中，混合均匀，喷涂到转鼓中连续滚动的肥料颗粒上，约几分钟后，形成底涂层。4然后将不饱和聚酯树脂包膜液混合均匀后，分多次逐渐喷涂到肥料颗粒的底涂层上。 5是将包膜后的肥料转移到冷却器中，使其冷却至室温，称量包装。 In the figure 1, first add urea into the drum, 2 is to preheat the fertilizer to 40-50°C in the heating drum, 3 is to measure the components of the epoxy resin system into the container in proportion, mix them evenly, and spray On to the continuously rolling fertilizer granules in the drum, after about a few minutes, a base coat is formed. 4 Then, after mixing the unsaturated polyester resin coating liquid evenly, it is gradually sprayed on the bottom coat of the fertilizer granules several times. 5 is to transfer the coated fertilizer to a cooler, allow it to cool to room temperature, and weigh and pack.
（五）具体实施方式(5) Specific implementation methods
实施例1：Example 1:
将94 kg直径为2-4 mm大颗粒尿素装入转鼓中，加热至50-70℃，先将环氧树脂约1.35 kg，固化剂三乙烯四胺约0.2 kg混合均匀后，逐渐加入到转鼓中的肥料颗粒表面上，转鼓转速约为40转/分，约5-6分钟后，环氧树脂即可在肥料表面固化成膜形成底涂层，此过程重复2次。然后将不饱和聚酯3301#约1.2 kg、不饱和聚酯FL-302约0.3 kg、促进剂约0.015 kg、引发剂约0.03 kg混合均匀后，逐渐喷涂到转鼓中的肥料颗粒上面，约5分钟后，不饱和聚酯即可在肥料颗粒表面固化成膜，此不饱和聚酯包膜过程重复2次。最后，肥料经冷却器冷却至室温，即可包装、贮存。所得控释肥膜占全部控释肥总重的6％左右，此肥料在25℃水或土壤中，养分控制释放时间约为60天。 Put 94 kg of large granule urea with a diameter of 2-4 mm into the drum, heat it to 50-70 ° C, first mix about 1.35 kg of epoxy resin and about 0.2 kg of curing agent triethylenetetramine, and then gradually add it to the On the surface of the fertilizer particles in the drum, the rotating speed of the drum is about 40 rpm. After about 5-6 minutes, the epoxy resin can be solidified on the surface of the fertilizer to form a primer layer. This process is repeated twice. Then mix about 1.2 kg of unsaturated polyester 3301#, about 0.3 kg of unsaturated polyester FL-302, about 0.015 kg of accelerator, and about 0.03 kg of initiator, and then gradually spray it on the fertilizer particles in the drum, about After 5 minutes, the unsaturated polyester can solidify and form a film on the surface of the fertilizer particles, and this unsaturated polyester coating process is repeated twice. Finally, the fertilizer is cooled to room temperature by a cooler, and then it can be packaged and stored. The obtained controlled-release fertilizer film accounts for about 6% of the total weight of the controlled-release fertilizer, and the controlled-release time of the nutrient is about 60 days when the fertilizer is placed in water or soil at 25°C.
实施例2：Example 2:
将92 kg直径为2-5 mm颗粒复合肥装入转鼓中，加热至60-90℃；先将不饱和聚酯3301#约1.4 kg、不饱和聚酯FL-302约0.3 kg、促进剂约0.017 kg、引发剂约0.034 kg混合均匀后，逐渐加入到转鼓中的肥料颗粒上面，转鼓转速约为40转/分，约5分钟后，不饱和聚酯即可在肥料颗粒表面固化成膜，此过程重复3次。然后将环氧树脂约1.3 kg，固化剂三乙烯四胺约0.2 kg混合均匀后，逐渐喷涂到转鼓中的肥料颗粒表面上，约5-6分钟后，环氧树脂即可在肥料表面固化成膜；此不饱和聚酯包膜过程重复2次。最后，肥料经冷却器冷却至室温，即可包装、贮存。所得控释肥膜占全部控释肥总重的8％左右，此肥料在25℃水或土壤中，养分控制释放时间约为120天。复合肥颗粒可以先喷涂不饱和聚酯，然后喷涂环氧树脂。 Put 92 kg of granular compound fertilizer with a diameter of 2-5 mm into the drum and heat it to 60-90°C; first add about 1.4 kg of unsaturated polyester 3301#, about 0.3 kg of unsaturated polyester FL-302, accelerator About 0.017 kg and about 0.034 kg of initiator are mixed evenly, and then gradually added to the fertilizer granules in the drum. The drum speed is about 40 rpm. After about 5 minutes, the unsaturated polyester can be solidified on the surface of the fertilizer granules. Film formation, this process was repeated 3 times. Then mix about 1.3 kg of epoxy resin and about 0.2 kg of curing agent triethylenetetramine, and then gradually spray it on the surface of the fertilizer particles in the drum. After about 5-6 minutes, the epoxy resin can be cured on the surface of the fertilizer. Film formation; this unsaturated polyester coating process is repeated 2 times. Finally, the fertilizer is cooled to room temperature by a cooler, and then it can be packaged and stored. The obtained controlled-release fertilizer film accounts for about 8% of the total weight of all controlled-release fertilizers, and the controlled-release time of nutrients for this fertilizer is about 120 days in water or soil at 25°C. Compound fertilizer granules can be sprayed with unsaturated polyester first, and then epoxy resin.
实施例3：Example 3:
将90 kg直径为2-5 mm颗粒复合肥装入转鼓中，加热至60-90℃，先将不饱和聚酯3301#约1.2 kg、不饱和聚酯FL-302约0.35 kg、促进剂约0.016 kg、引发剂约0.032 kg混合均匀后，逐渐加入到转鼓中的肥料颗粒上面，约8分钟后，不饱和聚酯即可在肥料颗粒表面固化成膜，此过程重复4次。然后将环氧树脂约1.8 kg，固化剂三乙烯四胺约0.2 kg混合均匀后，逐渐加入到转鼓中的肥料颗粒表面上，转鼓转速约为40转/分，约5-6分钟后，环氧树脂即可在肥料表面固化成膜，此过程重复2次。最后，肥料经冷却器冷却至室温，即可包装、贮存。所得控释肥膜占全部控释肥总重的10％左右，此肥料在25℃水或土壤中，养分控制释放时间约为180天。 Put 90 kg of granular compound fertilizer with a diameter of 2-5 mm into the drum, heat it to 60-90 ° C, first add about 1.2 kg of unsaturated polyester 3301#, about 0.35 kg of unsaturated polyester FL-302, accelerator About 0.016 kg and about 0.032 kg of initiator are mixed evenly, and then gradually added to the fertilizer granules in the drum. After about 8 minutes, the unsaturated polyester can solidify and form a film on the surface of the fertilizer granules. This process is repeated 4 times. Then mix about 1.8 kg of epoxy resin and about 0.2 kg of curing agent triethylenetetramine evenly, and then gradually add it to the surface of the fertilizer particles in the drum, the drum speed is about 40 rpm, and after about 5-6 minutes , the epoxy resin can be cured to form a film on the surface of the fertilizer, and this process is repeated twice. Finally, the fertilizer is cooled to room temperature by a cooler, and then it can be packaged and stored. The obtained controlled-release fertilizer film accounts for about 10% of the total weight of all controlled-release fertilizers, and the controlled-release time of nutrients for this fertilizer is about 180 days in water or soil at 25°C.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210150063.6A CN103044169B (en) | 2012-05-15 | 2012-05-15 | Controlled release fertilizer using unsaturated polyester resin to cover film and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210150063.6A CN103044169B (en) | 2012-05-15 | 2012-05-15 | Controlled release fertilizer using unsaturated polyester resin to cover film and production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103044169A CN103044169A (en) | 2013-04-17 |
| CN103044169B true CN103044169B (en) | 2014-05-14 |
Family
ID=48057057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210150063.6A Expired - Fee Related CN103044169B (en) | 2012-05-15 | 2012-05-15 | Controlled release fertilizer using unsaturated polyester resin to cover film and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103044169B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103524218B (en) * | 2013-09-30 | 2015-01-07 | 安徽省司尔特肥业股份有限公司 | Soil improvement type soybean dedicated sustained-release fertilizer and preparation method thereof |
| CN105753611A (en) * | 2016-01-11 | 2016-07-13 | 湖北省农业科学院植保土肥研究所 | Unsaturated polyester coated controlled-release fertilizer prepared from PET wastes and preparation method thereof |
| CN108378015A (en) * | 2018-02-24 | 2018-08-10 | 王鹏飞 | A kind of coating method of particle bird repellent |
| CN110483165B (en) * | 2019-07-30 | 2021-08-31 | 湖北大学 | A kind of coated slow-control fertilizer and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1958533A (en) * | 2005-11-02 | 2007-05-09 | 南京理工大学 | Polymer emulsion composite capsule type slow-release fertilizer |
| CN101172912A (en) * | 2007-11-01 | 2008-05-07 | 山东农业大学 | Special controlled-release fertilizer for fruit and vegetable plants and preparation method thereof |
| JP2008247653A (en) * | 2007-03-29 | 2008-10-16 | Sumitomo Chemical Co Ltd | Method for producing granular fertilizer composition, and granular fertilizer composition |
| CN101597193A (en) * | 2008-06-03 | 2009-12-09 | 南京理工大学 | Preparation method of coated particles |
| CN101712572A (en) * | 2008-10-07 | 2010-05-26 | 南京理工大学 | Fat-mass film-coated slow-release fertilizer |
| CN101811916A (en) * | 2010-04-16 | 2010-08-25 | 山东农业大学 | Large granular coated controlled-release fertilizer and production method thereof |
| CN101880195A (en) * | 2009-05-09 | 2010-11-10 | 南京理工大学 | Environmentally degradable coated slow-release fertilizer |
| CN101880196A (en) * | 2009-05-09 | 2010-11-10 | 南京理工大学 | Effective controlled-release method of chemical fertilizer and effective controlled-release chemical fertilizer |
-
2012
- 2012-05-15 CN CN201210150063.6A patent/CN103044169B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1958533A (en) * | 2005-11-02 | 2007-05-09 | 南京理工大学 | Polymer emulsion composite capsule type slow-release fertilizer |
| JP2008247653A (en) * | 2007-03-29 | 2008-10-16 | Sumitomo Chemical Co Ltd | Method for producing granular fertilizer composition, and granular fertilizer composition |
| CN101172912A (en) * | 2007-11-01 | 2008-05-07 | 山东农业大学 | Special controlled-release fertilizer for fruit and vegetable plants and preparation method thereof |
| CN101597193A (en) * | 2008-06-03 | 2009-12-09 | 南京理工大学 | Preparation method of coated particles |
| CN101712572A (en) * | 2008-10-07 | 2010-05-26 | 南京理工大学 | Fat-mass film-coated slow-release fertilizer |
| CN101880195A (en) * | 2009-05-09 | 2010-11-10 | 南京理工大学 | Environmentally degradable coated slow-release fertilizer |
| CN101880196A (en) * | 2009-05-09 | 2010-11-10 | 南京理工大学 | Effective controlled-release method of chemical fertilizer and effective controlled-release chemical fertilizer |
| CN101811916A (en) * | 2010-04-16 | 2010-08-25 | 山东农业大学 | Large granular coated controlled-release fertilizer and production method thereof |
Non-Patent Citations (10)
| Title |
|---|
| 包膜缓控释肥料用包膜材料的探讨;袁洋;《磷肥与复肥》;20090331;第24卷(第2期);第53-54页 * |
| 喻建刚等.水溶性树脂包膜控释肥料养分释放特征及影响因素.《农业工程学报》.2009,第25卷(第9期), |
| 李月等.聚合物包膜肥料养分控释研究进展.《胶体与聚合物》.2010,第28卷(第2期), |
| 水溶性树脂包膜控释肥料养分释放特征及影响因素;喻建刚等;《农业工程学报》;20090930;第25卷(第9期);第84-89页 * |
| 环氧树脂http://baike.baidu.com/history/id=30276234.环氧树脂http://baike.baidu.com/history/id=30276234.《百度百科》.2012, |
| 环氧树脂http://baike.baidu.com/history/id=30276234;环氧树脂http://baike.baidu.com/history/id=30276234;《百度百科》;20120423;第1-5页 * |
| 聚合物包膜肥料养分控释研究进展;李月等;《胶体与聚合物》;20100630;第28卷(第2期);第85-88页 * |
| 聚酯树脂http://baike.baidu.com/history/id=22630347.聚酯树脂http://baike.baidu.com/history/id=22630347.《百度百科》.2011, |
| 聚酯树脂http://baike.baidu.com/history/id=22630347;聚酯树脂http://baike.baidu.com/history/id=22630347;《百度百科》;20110815;第1-2页 * |
| 袁洋.包膜缓控释肥料用包膜材料的探讨.《磷肥与复肥》.2009,第24卷(第2期), |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103044169A (en) | 2013-04-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102795923B (en) | Epoxidized soybean oil modified resin coated controlled release fertilizer and preparation method thereof | |
| CN103242086B (en) | Starch-liquefying modified thermosetting resin film-coated controlled release fertilizer and preparation method thereof | |
| CN1246265C (en) | Heavy polymer coated slow-release fertilizer with sulfide as bottom coat | |
| CN101182269A (en) | A kind of water-based polymer coating and preparation method of coated controlled-release fertilizer | |
| CN104744164B (en) | Synthesize the powdery potassium chloride prilling process that Lauxite is binding agent | |
| CN1257136C (en) | Production method of coated controlled-release fertilizer using recycled thermoplastic resin as degradable film | |
| CN103319252B (en) | A kind of polyurethane coated controlled-release fertilizer containing weedicide and preparation method thereof | |
| CN103044169B (en) | Controlled release fertilizer using unsaturated polyester resin to cover film and production method thereof | |
| CN101328097B (en) | Compound film controlled release fertilizer and organic polymer coating material thereof | |
| CN101857490A (en) | Slow/controlled-release compound fertilizer suitable for field crops | |
| CN1246264C (en) | Modified epoxy resin coated slow-release fertilizer with spray coating urea as bottom coat | |
| CN106977314A (en) | A kind of moisture-retention sustained release and release control fertilizer of agricultural crop straw water-loss reducer coating and preparation method thereof | |
| CN101857484A (en) | Preparation of slow-release enveloped fertilizer | |
| CN103333006A (en) | Compound fertilizer controlled release coated agent | |
| CN107141065A (en) | A kind of self-curing film-coated controlled release fertilizer and preparation method thereof | |
| CN102584471A (en) | Organosilicone water soluble long-acting compound fertilizer and preparation method thereof | |
| CN100467431C (en) | A kind of manufacturing method of endoplasmic tower melt granulation slow and controlled release compound fertilizer | |
| CN100506757C (en) | Special slow/controlled release fertilizer for field and production method thereof | |
| CN101823920B (en) | Preparation method for sustained-release and controlled release compound fertilizer suitable for field crop | |
| CN101172913A (en) | A polymer-coated controlled-release fertilizer and its preparation method | |
| CN102311291B (en) | Resin coated sustained and controlled release fertilizer and preparation method thereof | |
| CN100567222C (en) | Production method of recycled thermoplastic resin and thermosetting resin multi-layer composite film controlled release fertilizer | |
| CN101215191A (en) | Preparation method of bamboo charcoal coated urea | |
| CN101759498B (en) | Degradable controlled release fertilizer | |
| CN119080572A (en) | A modified polyurethane coated fertilizer and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140514 Termination date: 20150515 |
|
| EXPY | Termination of patent right or utility model |